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Diffstat (limited to 'vendor/exr/src/image/read/samples.rs')
-rw-r--r-- | vendor/exr/src/image/read/samples.rs | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/vendor/exr/src/image/read/samples.rs b/vendor/exr/src/image/read/samples.rs deleted file mode 100644 index e03c3cc..0000000 --- a/vendor/exr/src/image/read/samples.rs +++ /dev/null @@ -1,122 +0,0 @@ -//! How to read samples (a grid of `f32`, `f16` or `u32` values). - -use crate::image::*; -use crate::meta::header::{Header}; -use crate::error::{Result, UnitResult}; -use crate::block::lines::LineRef; -use crate::math::Vec2; -use crate::meta::attribute::{ChannelDescription, SampleType}; -use crate::image::read::any_channels::{SamplesReader, ReadSamples}; -use crate::image::read::levels::{ReadSamplesLevel, ReadAllLevels, ReadLargestLevel}; -use crate::block::chunk::TileCoordinates; -// use crate::image::read::layers::ReadChannels; - -/// Specify to read only flat samples and no "deep data" -// FIXME do not throw error on deep data but just skip it! -#[derive(Debug, Copy, Clone, Eq, PartialEq)] -pub struct ReadFlatSamples; -// pub struct ReadAnySamples; - -impl ReadFlatSamples { - - // TODO - // e. g. `let sum = reader.any_channels_with(|sample, sum| sum += sample)` - // pub fn any_channels_with <S> (self, storage: S) -> { } - - /// Specify to read only the highest resolution level, skipping all smaller variations. - pub fn largest_resolution_level(self) -> ReadLargestLevel<Self> { ReadLargestLevel { read_samples: self } } - - /// Specify to read all contained resolution levels from the image, if any. - pub fn all_resolution_levels(self) -> ReadAllLevels<Self> { ReadAllLevels { read_samples: self } } - - // TODO pub fn specific_resolution_level<F: Fn(&[Vec2<usize>])->usize >(self, select_level: F) -> ReadLevelBy<Self> { ReadAllLevels { read_samples: self } } -} - - -/*pub struct AnySamplesReader { TODO - resolution: Vec2<usize>, - samples: DeepAndFlatSamples -}*/ - -/// Processes pixel blocks from a file and accumulates them into a grid of samples, for example "Red" or "Alpha". -#[derive(Debug, Clone, PartialEq)] -pub struct FlatSamplesReader { - level: Vec2<usize>, - resolution: Vec2<usize>, - samples: FlatSamples -} - - -// only used when samples is directly inside a channel, without levels -impl ReadSamples for ReadFlatSamples { - type Reader = FlatSamplesReader; - - fn create_sample_reader(&self, header: &Header, channel: &ChannelDescription) -> Result<Self::Reader> { - self.create_samples_level_reader(header, channel, Vec2(0, 0), header.layer_size) - } -} - -impl ReadSamplesLevel for ReadFlatSamples { - type Reader = FlatSamplesReader; - - fn create_samples_level_reader(&self, _header: &Header, channel: &ChannelDescription, level: Vec2<usize>, resolution: Vec2<usize>) -> Result<Self::Reader> { - Ok(FlatSamplesReader { - level, resolution, // TODO sampling - samples: match channel.sample_type { - SampleType::F16 => FlatSamples::F16(vec![f16::ZERO; resolution.area()]), - SampleType::F32 => FlatSamples::F32(vec![0.0; resolution.area()]), - SampleType::U32 => FlatSamples::U32(vec![0; resolution.area()]), - } - }) - } -} - - -impl SamplesReader for FlatSamplesReader { - type Samples = FlatSamples; - - fn filter_block(&self, tile: TileCoordinates) -> bool { - tile.level_index == self.level - } - - fn read_line(&mut self, line: LineRef<'_>) -> UnitResult { - let index = line.location; - let resolution = self.resolution; - - // the index is generated by ourselves and must always be correct - debug_assert_eq!(index.level, self.level, "line should have been filtered"); - debug_assert!(index.position.x() + index.sample_count <= resolution.width(), "line index calculation bug"); - debug_assert!(index.position.y() < resolution.height(), "line index calculation bug"); - debug_assert_ne!(resolution.0, 0, "sample size bug"); - - let start_index = index.position.y() * resolution.width() + index.position.x(); - let end_index = start_index + index.sample_count; - - debug_assert!( - start_index < end_index && end_index <= self.samples.len(), - "for resolution {:?}, this is an invalid line: {:?}", - self.resolution, line.location - ); - - match &mut self.samples { - FlatSamples::F16(samples) => - line.read_samples_into_slice(&mut samples[start_index .. end_index]) - .expect("writing line bytes failed"), - - FlatSamples::F32(samples) => - line.read_samples_into_slice(&mut samples[start_index .. end_index]) - .expect("writing line bytes failed"), - - FlatSamples::U32(samples) => - line.read_samples_into_slice(&mut samples[start_index .. end_index]) - .expect("writing line bytes failed"), - } - - Ok(()) - } - - fn into_samples(self) -> FlatSamples { - self.samples - } -} - |